<benchmark>

A standard program or set of programs which can be run on different computers to give an inaccurate measure of their performance.

"In the computer industry, there are three kinds of lies: lies, damn lies, and benchmarks."

A benchmark may attempt to indicate the overall power of a system by including a "typical" mixture of programs or it may attempt to measure more specific aspects of performance, like graphics, I/O or computation (integer or floating-point). Others measure specific tasks like rendering polygons, reading and writing files or performing operations on matrices. The most useful kind of benchmark is one which is tailored to a user's own typical tasks. While no one benchmark can fully characterise overall system performance, the results of a variety of realistic benchmarks can give valuable insight into expected real performance.

Benchmarks should be carefully interpreted, you should know exactly which benchmark was run (name, version); exactly what configuration was it run on (CPU, memory, compiler options, single user/multi-user, peripherals, network); how does the benchmark relate to your workload?

Well-known benchmarks include Whetstone, Dhrystone, Rhealstone (see h), the Gabriel benchmarks for Lisp, the SPECmark suite, and LINPACK.

See also: machoflops, MIPS, smoke and mirrors.

Usenet newsgroup: comp.benchmarks.

Tennessee BenchWeb.

(01 Jul 2002)

Bence Jones proteinuria, Bence Jones reaction, bench < Prev | Next > benchmark, bench mark, benchmarking

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<assessment> A detailed description of a specific level of student performance expected of students at particular ages, grades, or development levels.

Benchmarks are often represented by samples of student work or examples of what is expected. They can be used as to monitor progress toward achieving performance goals within and across grade levels.

They can be used to collect data on the performance of similar innovations or programmes and against which other performances may be judged or compared.

See: standards

(09 Mar 2006)

A fixed, more or less permanent reference point or object of known elevation, the U.S. Geological Survey (USGS) installs brass caps in bridge abutments or otherwise permanently sets bench marks at convenient locations nationwide, the elevations on these marks are referenced to the National Geodetic Vertical Datum (NGVD), also commonly known as mean sea level (MSL), locations of these bench marks on USGS topographic maps are shown as small triangles, since the marks are sometimes destroyed by construction or vandalism, the existence of any bench mark should be field verified before planning work which relies on a particular reference point, the USGS or local state surveyors office can provide information on the existence, exact location and exact elevation of bench marks.

(09 Oct 1997)

Bence Jones reaction, bench, benchmark, benchmark < Prev | Next > benchmarking, benchmarking, bench testing

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